Final Lift
By the Pound
Sara paid $4.00 for a 2-pound box of strawberries.
Matt paid $7.00 for a 5-pound box of mangos.
1. What is the unit rate, or cost per pound for strawberries?
For mangos?
2. Which graph best shows these relationships? (Circle one)
Mangos
Strawberries
Mangos
Strawberries
3. Complete the following sentence. Be sure to describe the meaning of the lines in
the graph in your response.
I know this is the correct graph because….
Copyright @ 2016 The Regents of the University of California
This work was supported by grant number #DRL-1020393 from the National Science Foundation and grant number
2012-8075 from the William and Flora Hewlett Foundation.
Last year the cost of oranges rose from $2 per pound to $4 per pound and the cost of
pineapples rose from $8 per pound to $11 per pound.
4. What is the ratio of the new price of oranges to the previous price of oranges?
5. What is the ratio of the new price of pineapples to the previous price of
pineapples?
6. Are the ratios proportional? If not, which ratio is larger? Explain your thinking.
Challenge
7. What is the percent increase in the cost of oranges?
8. What is the percent increase in the cost of pineapples?
9. Do you think either of these two values would be a good measure of inflation
overall? Why or why not?
Copyright @ 2016 The Regents of the University of California
This work was supported by grant number #DRL-1020393 from the National Science Foundation and grant number
2012-8075 from the William and Flora Hewlett Foundation.